What was the best-selling home video game of the '80s?

Today, the video game industry generates hundreds of billions of dollars.

But in the 1980s, home video game systems had to go from proving they could even work to becoming the next big thing in home entertainment.

Eventually, consumers began to open their wallets — by which I mean kids begged their parents relentlessly until they caved.

There were a lot of games from that era that became ubiquitous in homes across America — but only one made the most moola of the decade. Which game was it?

Click START to answer.